APA (7th ed.) Citation

Ethorton, A. (1963). A graded secondary school English course. Longman Group Ltd.

Chicago Style (17th ed.) Citation

Ethorton, A.R.B. A Graded Secondary School English Course. Hongkong: Longman Group Ltd, 1963.

MLA (9th ed.) Citation

Ethorton, A.R.B. A Graded Secondary School English Course. Longman Group Ltd, 1963.

Warning: These citations may not always be 100% accurate.